In its notice, the FAA tells airlines to alert crews of the potential issue.

The safety alert directs pilots and airline operators to review Boeing's procedure for responding to a jammed rudder. The FAA said it will collect data as a result of the recommended check and investigation but does not plan to propose a directive that would require airlines to replace the parts that can stick.

The National Transportation Safety Board said it had found a defective part in the system that helps steer the aircraft after investigating an incident at Newark airport.

The U.S. Federal Aviation Administration (FAA) on Tuesday issued a safety alert informing operators of the potential for limited or jammed rudder movement on certain Boeing (NYSE:BA) 737 airplanes. The FAA issued a so-called Safety Alert for Operators (SAFO).

The US Federal Aviation Administration warned operators of certain Boeing Co. 737 aircraft that the rudder system could possibly jam due to a faulty part, a week after a safety official rebuked the agency for not acting sooner to address the issue.